Specification of A1990 Laptop Replacement BatteryModel Name: A1953 Battery, Capacity: 7400mAh/84.36Wh, Voltage: 11.4V, Battery Type: Li-Polymer Operating life and certificationCobalt Proportion: >98%. Upgrade chip - Up to 1500+ recharge cycles over the life of the battery, Long operating time after charging full with 7400mAh real high capacity, same with original battery A1953 Premium Electric CoreJapan Newest 4.0 upgraded OEM Battery for macbook pro 15 Inch A1990. Better circuit board, multiple command chip control, keep the battery stable charge and discharge. Over charger and discharger (short-circuit) protection, ensure fast charges and low power consumption Compatibility MacBook pro 15 inch A1990 Mid 2018: MacBookPro15,1 EMC 3215 (MR932xx/A, MR942xx/A, MR952xx/A, MR962xx/A, MR972xx/A, MUQH2xx/A) SF661-13163. MacBook pro 15 inch A1990 2019: MacBookPro15,3 (15,1) EMC 3359 (MV902LL/A, MV912LL/A, MV922LL/A, MV932LL/A, MV942LL/A, MV952LL/A, MV962LL/A, MV972LL/A, MV902B